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A222455 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order 1

%I #4 Feb 20 2013 17:04:45

%S 5,64,467,8483,84558,1752892,17977932,398308251,4297235804,

%T 98149697258,1083889273467,25078137790680,280275184599151,

%U 6532746120961558,73535195746145607,1722280102006903545,19480494007933810209

%N Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Column 7 of A222456

%H R. H. Hardin, <a href="/A222455/b222455.txt">Table of n, a(n) for n = 1..41</a>

%e Some solutions for n=4

%e ..0..1..0..0..1..1..1....0..0..0..1..1..1..0....0..0..0..0..0..0..0

%e ..1..0..1..1..1..1..1....0..0..0..1..0..0..1....0..0..0..0..0..0..0

%e ..0..0..1..1..1..1..1....0..0..0..0..0..0..0....1..0..0..1..0..0..0

%e ..1..1..1..1..1..1..1....0..0..0..0..0..0..0....0..1..0..1..0..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 20 2013

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)